Centralized management is one half of the problem. The other half is how agents discover which MCP servers even exist in the first place. Right now you have the official MCP Registry, a bunch of GitHub-based lists, and individual vendors maintaining their own catalogs. If you're running Google's A2A agents alongside MCP, you need a totally separate discovery path.

The IETF currently has somewhere around 8 competing drafts for standardizing agent discovery -- agents.txt, ARDP, AID, AINS, and others. The original agents.txt draft actually expires April 10, so that whole space is in flux. Until there's a standard way to discover servers across protocols, any control plane is limited to whatever servers you manually configure.

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